ios 7 beta 6 - activation issue

Hey all - need some help.

running an iphone4s with ios 7 beta 6; earlier today i upgraded to the beta 6 a few hours later it dropped to the lockscreen with the activation required notification.

i've tried to go through the process but it keeps coming up saying 'could not activate iphone' there doesnt appear to be any reason from it.

I seemed to have left the ios7's find my iphone featured enabled that stops a thief from re-enabling the phone without the icloud usr and pass, unfortunately that means i cannot restore my iphone in the usual manner.

if anyone can help that would be great. Also my UDID is registered with the developer account.

thanks